The Intel Broadwell Desktop Review: Core i7-5775C and Core i5-5675C Tested (Part 1)
by Ian Cutress on June 2, 2015 7:45 AM ESTProfessional Performance: Windows
Agisoft Photoscan – 2D to 3D Image Manipulation: link
Agisoft Photoscan creates 3D models from 2D images, a process which is very computationally expensive. The algorithm is split into four distinct phases, and different phases of the model reconstruction require either fast memory, fast IPC, more cores, or even OpenCL compute devices to hand. Agisoft supplied us with a special version of the software to script the process, where we take 50 images of a stately home and convert it into a medium quality model. This benchmark typically takes around 15-20 minutes on a high end PC on the CPU alone, with GPUs reducing the time.
The presence of Crystal Well had a small effect on Photoscan, occurring mostly in the second phase of the calculation which is the one that also has an option to enable the GPU, indicating that memory bandwidth is an potential limitation in that segment.
Cinebench R15
Cinebench is a benchmark based around Cinema 4D, and is fairly well known among enthusiasts for stressing the CPU for a provided workload. Results are given as a score, where higher is better.
Cinebench is a historically CPU-limited benchmark, and the results show this again here. The fact that the 3.6GHz Broadwell-based i5-5675C performs so closely to the 3.9GHz Haswell-based i5-4690 is a promising sign here, as it means that despite being a mere "tick" in Intel's development efforts, there are tangible IPC increases on the desktop from Broadwell.
HandBrake v0.9.9: link
For HandBrake, we take two videos (a 2h20 640x266 DVD rip and a 10min double UHD 3840x4320 animation short) and convert them to x264 format in an MP4 container. Results are given in terms of the frames per second processed, and HandBrake uses as many threads as possible.
While no obvious improvement was seen in the low quality conversion, the double UHD conversion put the i7 above what was otherwise expected.
Hybrid x265
Hybrid is a new benchmark, where we take a 4K 1500 frame video and convert it into an x265 format without audio. Results are given in frames per second.
Unlike the Handbrake H.264 tests, the Hybrid x265 tests show a clear uptick in performance on the Broadwell processors. It is not fast enough to catch the i7-4790K and its 4.4GHz turbo clockspeed, but we see the i5-5675C shoot well past the i5-4690 despite the clockspeed deficit. Whether this is due to Broadwell architecture enhancements, Crystal Well acting as an L4 cache, or a combination of the two is difficult to determine, but the end result is substantial.
196 Comments
View All Comments
ES_Revenge - Monday, July 13, 2015 - link
So over a month later...this seems like it was quite the paper launch. Not only have we not seen "part 2" of this review (with OC results), it doesn't seem like you can actually *buy* one of the CPUs anywhere.Best I seem to have found is Amazon but they show it's not even going to be in stock until mid-August! Won't Skylake be around by then? Intel really doesn't care about Broadwell I guess--you have to wonder why they even bothered.
tania420 - Thursday, July 30, 2015 - link
I like this. Intel always create dynamical product. For Intel lover here i7-4790k Reviews visit <a herf=” http://www.xiontech.net/”>here</a>tania420 - Thursday, July 30, 2015 - link
I agree, the obvious thing to do is use the price as it is during the time the article was written. For Intel i7-4790k reviews visit <a href=” http://www.xiontech.net/”> here</a>Gadgety - Sunday, August 2, 2015 - link
So I got the A8-7600 for $93 including shipping and 25% sales tax for the kids. The i5-5675C is $348 with shipping and the same sales tax. With the i5 the gaind would be 7-9 fps in GTA V, 6fps in GRID Autosport, and about 0% in Battlefield4 (A8-7600 34fps, 1920x1080, medium detail, with Mantle 14.6), for an additional $255, that is.felipetga - Wednesday, August 30, 2017 - link
Would it work on a H81 chipset motherboard?yeeeeman - Saturday, March 14, 2020 - link
Well, who would've known at that time of the review (year 2015) that this slow to bring-up process, that is 14nm will be in service so many years and still is today, year 2020.I think Intel should've reconsidered their plans for 10nm, after seeing how slow 14nm ramped, but probably management was somewhat communistic with the engineers.